A headed externally threaded fastener whose threaded portion is of one nominal diameter, with a square neck directly beneath the head.
NSN 5965-01-269-4338
NSN 5835-00-223-7235
NSN 5925-01-232-0841
NSN 6620-00-684-6771
NSN 5895-01-158-5091
NSN 6105-01-177-7476
NSN 6685-01-442-6465
NSN 6145-00-763-4430
NSN 5998-01-217-4593
NSN 5905-01-398-5511
NSN 5950-01-418-9166
NSN 5975-00-909-1869